The effect of side chain spacer length on the thermoresponsive behaviour of poly(methylamide acrylate)s. Rajakanthan, A., Wilson, P., & Kempe, K. POLYMER CHEMISTRY, 14(17):2054–2062, May, 2023. doi abstract bibtex We report the synthesis of three methylamide acrylate monomers with varying spacer length between the polymerizable acrylate and pendant amide functionalities; methylamide ethyl acrylate (MAmEA), methylamide propyl acrylate (MAmPA) and methylamide butyl acrylate (MAmBA). Each monomer was subsequently polymerised via redox-initiated reversible addittion-fragmentation chain transfer (RRAFT) to yield well-defined homopolymers with differing physicochemical properties. All homopolymers were found to be amorphous, and thermally degrade via a two-step decomposition process. Whilst P(MAmEA) and P(MAmPA) were found to be soluble in aqueous solution between 30-80 degrees C, P(MAmBA) showed a lower critical solution temperature (LCST) behaviour. Detailed aqueous solubilty studies performed on P(MAmBA) revealed that the cloud point temperature (T-cp) could be tuned based on the degree of polymerisation (DPn), concentration and nature of the aqueous media, highlighting its potential use as a water-soluble, thermoresponsive polymer in a range of applications.
@article{rajakanthan_effect_2023,
title = {The effect of side chain spacer length on the thermoresponsive behaviour of poly(methylamide acrylate)s},
volume = {14},
issn = {1759-9954},
doi = {10.1039/d3py00154g},
abstract = {We report the synthesis of three methylamide acrylate monomers with varying spacer length between the polymerizable acrylate and pendant amide functionalities; methylamide ethyl acrylate (MAmEA), methylamide propyl acrylate (MAmPA) and methylamide butyl acrylate (MAmBA). Each monomer was subsequently polymerised via redox-initiated reversible addittion-fragmentation chain transfer (RRAFT) to yield well-defined homopolymers with differing physicochemical properties. All homopolymers were found to be amorphous, and thermally degrade via a two-step decomposition process. Whilst P(MAmEA) and P(MAmPA) were found to be soluble in aqueous solution between 30-80 degrees C, P(MAmBA) showed a lower critical solution temperature (LCST) behaviour. Detailed aqueous solubilty studies performed on P(MAmBA) revealed that the cloud point temperature (T-cp) could be tuned based on the degree of polymerisation (DPn), concentration and nature of the aqueous media, highlighting its potential use as a water-soluble, thermoresponsive polymer in a range of applications.},
number = {17},
urldate = {2023-04-15},
journal = {POLYMER CHEMISTRY},
author = {Rajakanthan, Alexander and Wilson, Paul and Kempe, Kristian},
month = may,
year = {2023},
pages = {2054--2062},
}
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